The SQL Explorer was querying Trino which has zero tables. Rewrote to
use PostgreSQL directly:
Backend:
- GET /api/analytics/pg-schema: returns all public tables with column
names, types, and nullability from information_schema
- POST /api/analytics/pg-query: read-only SQL execution against
PostgreSQL with SELECT-only enforcement, auto LIMIT, and descriptive
error messages for syntax/table/query errors
Frontend:
- Schema browser shows all PostgreSQL tables with columns and types
- Click a table name → generates SELECT * FROM table LIMIT 100
- Pre-built Queries section with 12 seeded queries covering companies,
recommendations, trends, market prices, documents, global events,
trading decisions, ingestion health, reserve pool, sector exposure
- User-saved queries shown separately with delete buttons
- Chart builder, Monaco editor, and save functionality preserved
Migration 021: seeds 12 pre-built saved queries
The Trino/Iceberg lakehouse has zero tables, so all Trino-backed
dashboards showed 'No data available'. Rewrote all four to use
existing PostgreSQL-backed API endpoints:
- Sentiment Heatmap: useTrends + useCompanies → sector and ticker
trend strength bar charts (30k trend_windows in DB)
- Prediction Accuracy: useRecommendations → confidence distribution
and action distribution charts (30k recommendations in DB)
- Paper PnL: useTradingMetrics + useTradingMetricsHistory → equity
curve, daily returns, win/loss stats from trading engine
- Model Quality: useModelPerformance + useModelFailures → success
rate, latency, retries, and failure table from ops API
Removed unused Trino query function and ScatterChart imports.
The throughput API returns one row per source_type per time bucket,
but the chart was mapping each row as a separate bar. With 5 source
types × 24 hours, the bars were tiny and overlapping. Now aggregates
completed/failed/items across source types per time bucket so the
chart shows meaningful totals.
When on /trading/engine, the /trading nav item also matched via
startsWith. Now checks if a more specific child route matches
first and uses exact match in that case.
TypeScript strict mode in CI rejects explicit parameter types on
Recharts formatter/tickFormatter callbacks. Use inference with
'as number' casts on the value instead. Also fix unsafe cast in
PortfolioComposition and handle possibly-undefined percent.
Celes Renata